Gurobi 5.0.1 (linux64) logging started Fri Jan 18 03:43:51 2013 Optimize a model with 11600 rows, 120300 columns and 270500 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.83s Presolved: 11500 rows, 120200 columns, 260400 nonzeros Variable types: 110200 continuous, 10000 integer (10000 binary) Root relaxation: objective 7.918217e+05, 11139 iterations, 1.61 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 791821.709 0 4 - 791821.709 - - 2s 0 0 791906.225 0 4 - 791906.225 - - 5s 0 0 791929.234 0 4 - 791929.234 - - 5s 0 0 791934.028 0 4 - 791934.028 - - 6s 0 0 791938.065 0 4 - 791938.065 - - 6s 0 0 791939.006 0 4 - 791939.006 - - 6s 0 0 791939.228 0 4 - 791939.228 - - 7s 0 0 791939.228 0 4 - 791939.228 - - 8s 0 0 791939.421 0 4 - 791939.421 - - 8s 0 0 791940.104 0 4 - 791940.104 - - 9s 0 0 791940.231 0 4 - 791940.231 - - 9s 0 0 791940.231 0 4 - 791940.231 - - 10s 0 0 791940.231 0 4 - 791940.231 - - 11s 0 0 791940.231 0 4 - 791940.231 - - 11s 0 0 791940.231 0 4 - 791940.231 - - 12s H 0 0 800545.11464 791940.231 1.07% - 13s 0 2 791940.231 0 4 800545.115 791940.231 1.07% - 14s 2 4 793336.244 1 4 800545.115 792500.568 1.00% 824 15s 11 11 798588.378 6 4 800545.115 792581.158 0.99% 415 20s H 27 8 793713.00865 792581.158 0.14% 211 24s 35 7 793242.394 24 2 793713.009 792581.158 0.14% 165 25s * 50 6 38 793357.35859 792581.158 0.10% 122 27s * 67 2 5 793200.24980 793024.070 0.02% 106 30s Cutting planes: Implied bound: 49 Flow cover: 9 Explored 76 nodes (24017 simplex iterations) in 30.36 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.932002498024e+05, best bound 7.932002498024e+05, gap 0.0%